* Safer helmet would not have protected Hughes
* Ambulance delay played no part in death
* Report recommends helmets mandatory for all first class batters (Recasts with new safety measures, adds quotes, details)
By Ian Ransom
MELBOURNE, May 11 (Reuters) - Australia's cricket board will make it compulsory for players to wear helmets when facing fast and medium-paced bowling in line with recommendations from a review into the death of test batsman Phillip Hughes.
Wicketkeepers and players fielding close to the wicket will also have to wear helmets in first class matches in accordance with the David Curtain review, which was released on Wednesday.